Along the front, sides and back -- they are removable and they slide into pockets on the cap.

2.) How long does it stay warm for? About 20 minutes

3.) How do you get all your hair into the cap? I stick all my hair into a thin plastic shower cap and then put on the heat cap.

4.) Does it come with heating instructions? My microwave is pretty beefcake lol Yes, it does come with instructions -- I heat longer than recommended -- I stick it in the microwave for a minute and then rotate it and heat for 30 more seconds.

Does anyone regret ordering theirs? I really want to try a DT with heat but don't want to find out it's to much for my hair, ya know? Thanks! I don't regret it at all -- I love mine!